APA (7e ed.) Bronvermelding

Perry, S., & Dawson, J. (1988). The secrets our body clocks reveal. Rawson Associates.

Chicago (17e ed.) Bronvermelding

Perry, Susan, en Jim Dawson. The Secrets Our Body Clocks Reveal. New York: Rawson Associates, 1988.

MLA (9e ed.) Bronvermelding

Perry, Susan, en Jim Dawson. The Secrets Our Body Clocks Reveal. Rawson Associates, 1988.